“Which-way” Spin Decoherence in a Coupled Quantum Dot System

Mateusz Krzykowski; Michał Gawełczyk; Michał Gawełczyk; Krzysztof Gawarecki; Paweł Machnikowski

doi:10.1364/QIM.2019.F5A.37

Quantum Information and Measurement (QIM) V: Quantum Technologies
OSA Technical Digest (Optica Publishing Group, 2019),
paper F5A.37
•https://doi.org/10.1364/QIM.2019.F5A.37

“Which-way” Spin Decoherence in a Coupled Quantum Dot System

Mateusz Krzykowski, Michał Gawełczyk, Krzysztof Gawarecki, and Paweł Machnikowski

Quantum Information and Measurement 2019

Rome Italy
4–6 April 2019
ISBN: 978-1-943580-56-9

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Poster Session II (F5A)

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M. Krzykowski, M. Gawełczyk, K. Gawarecki, and P. Machnikowski, "“Which-way” Spin Decoherence in a Coupled Quantum Dot System," in Quantum Information and Measurement (QIM) V: Quantum Technologies, OSA Technical Digest (Optica Publishing Group, 2019), paper F5A.37.

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Abstract

We study numerically and analytically decoherence of spin doublet coupled to phonon bath environment during the spin tunnelling. We recognize it as “which-way” type of process with the phonon bath effectively measuring the spin.

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